When one excited Yonkers resident tweeted that “Twilight” star Kristen Stewart was spotted in her apartment building this morning, we were dying to find out more.

We confirmed with the Yonkers Film Office that “Still Alice,” a film starring Stewart and Julianne Moore, is on location in Yonkers Monday. Scenes are being shot in a residential building on N. Broadway.

“Still Alice” is about a neuroscientist (played by Moore) who discovers she’s suffering from an early onset of Alzheimer’s disease. Stewart plays her daughter. The cast also includes Alec Baldwin and Kate Bosworth.

Oh, and what about that tweeting fan we mentioned? Below are some highlights from her morning. (Would you be just as excited if you ran into Stewart or Moore in your building or neighborhood? Tell us in the comments.)